PIC18F87J90 Datasheet, PDF (135/450 Pages) Microchip Technology – 64/80-Pin, High-Performance Microcontrollers with LCD Driver and nanoWatt Technology

PIC18F87J90 FAMILY
10.9 PORTH, LATH and
TRISH Registers
Note: PORTH is available only on PIC18F8XJ90
devices.
PORTH is an 8-bit wide, bidirectional I/O port. The
corresponding Data Direction and Output Latch registers
are TRISH and LATH. All pins are digital only and
tolerate voltages up to 5.5V.
All pins on PORTH are implemented with Schmitt
Trigger input buffers. Each pin is individually
configurable as an input or output.
All PORTH pins are multiplexed with LCD segment
drives controlled by the LCDSE5 register. I/O port
functions are only available when the segments are
disabled.
EXAMPLE 10-8:
CLRF PORTH
CLRF LATH
MOVLW
MOVWF
MOVLW
0Fh
ADCON1
0CFh
MOVWF TRISH
INITIALIZING PORTH
; Initialize PORTH by
; clearing output
; data latches
; Alternate method
; to clear output
; data latches
; Configure PORTH as
; digital I/O
; Value used to
; initialize data
; direction
; Set RH3:RH0 as inputs
; RH5:RH4 as outputs
; RH7:RH6 as inputs
 2010 Microchip Technology Inc.
DS39933D-page 135